DNS Security Extensions (DNSSEC) is a suite of extensions that add security to the DNS protocol. RFCs 4033, 4034, 4035, and 5155 specify the core DNSSEC extensions and add origin authority, data integrity, and authenticated denial of existence to DNS. In addition to several new concepts and operations for both the DNS server and the DNS client, DNSSEC introduces new resource records (DNSKEY, RRSIG, NSEC, NSEC3, and DS) to DNS.

Microsoft SQL Server 2008 Management Studio Express is a free, integrated environment for accessing, configuring, managing, administering, and developing all components of SQL Server, as well as combining a broad group of graphical tools and rich script editors that provide access to SQL Server to developers and administrators of all skill levels.

Service Pack 2, the latest service pack for both Windows Server 2008 and Windows Vista, supports new types of hardware and emerging hardware standards, includes all of the updates that have been delivered since SP1, and simplifies deployment, for consumers, developers, and IT professionals.